Gas burner



Oct. 15, 1929. E. MEIER 1,73f,722

GAS BURNER Filed Dec. 28, 1927 Inventor:

' fuser made Patented Oct. 15, 1929 UNITED STATES,

PATENT" OFFICE ERNST MEIER, OF BOCHUM,

SCHAIT BALCKE,

GAS BURNER Application filed December 28, 1927, Serial no.'243,1'os, and in Germany July 11, 1927.

This invention has reference to a gas burner having improved means of producing very thorough mixture of fuel and air, and it refers in particular to gas burners 1n which the thorough incorporation of the constituents of the mixture is effected by imparting a rotary movement to the two currents. It has already been suggested to so arrange the passages of the two fluids that fuel and air are alternately while a rotating movement is imparted to the fluids. Such passages in accordance with the previous art have been disposed in a vertical plane with a tangential component with relation to the axis of symmetry on the burner, so that by means of this arrangement the fluids or gases were submitted to a rotating movement with relation to the axis of symmetry. With this arrangementhowever the abrupt change of direction occurring upon the change of movement of the gases from the plane at right angle to the axis of symmetry to the direction of the axis itself resulted in the formation of eddies and contractions of fluid and consequently in considerable losses of energy. The free sectional areas of the passages were therefore not fully ntilized with this construction of burners in accordance with the previous art. In the case of changes or variations of pressure of the air admitted or of the gaseous fuel the air was liable to enter into the gas conduit or inversely, so that the. safety and reliability of the entire arrangement was therefore seriously disturbed.

Now in accordance with this invention these difiiculties are avoided and a very thorough mixture is obtained by providing a plurality of circularly and alternatingly arranged gas and air nozzles, preferably made of fire-brick or chamotte, or similar material and communicating with a so-called difof such fire-proof material, the said nozzles being disposed at an inclination to the longitudinal axis of the diffuser and in the direction of a tangential component. The dimensions of the diffuser and the inclination of the nozzles'are so proportioned that both the gas nozzles are adapted to produce an aspirating action on the airy nozzles, as

introduced into the mixture,

well as inversely, that is to say that the air nozzles will likewise produce an aspirating action on the gas nozzles. This suction may be utilized for the purpose of automatically producing a compensation of pressure between the air and the gas conduit without the necessity of special pressure compensating means, and in consequence thereof the entire combination of elements is considerably sim plified. i

The invention will be more fully described by reference to the accompanying drawing showing an embodiment of the invention by way of exemplification in Figure 1 in longitudinal sectionthrough a burner, while Figure 2 re resents diagrammatically a development of t e nozzles which may be considered as a kind of section on a conical surface a, b in Figure 1.

The gaseous fuel may be assumed to be introduced into the annular space a through the admission conduit 6, While the air is shown to be introduced into the annular space (I by way of the admission conduit 0. From the annular space a the nozzles e and from the annular space cl the nozzles f are shown to lead into the diffuser g. The nozzles are directed at an angle to the axis of symmetry of the burner and of the diffuser and the longitudinal axis of the nozzles is so arranged as to extend in the direction of a tangential component, that is to say it extends also at an inclination to the generatrix. of the conical surface in which the central sections of the nozzles are arranged. An inspection window 11. is arranged in the burner by means of the cover it which allows the observation of the flame.

By means of the peculiar position of the nozzles a rotation of the gases on the longitudinal axis of the burner is produced, and by this means the gases are caused to flow from the nozzles into the diifuser'free from contraction and eddies and the difiuser in its turn will cause the rotating gas current to continue on its way without the occurrence of eddies. As a result of this flow of gases and of its freedom of contraction and eddies the air nozzles will produce an aspirating action on the gas nozzles and inversely the gas nozzles on the air nozzles, as already mentioned, so that upon the decrease of the pressure in one of the conduits there will be no back-flow and no liability of the transition of the gaseous material from one conduit to 5 the other. As a further result of the aspirating action the pressures are automatically compensated, so that the necessity of employingdpressure compensators is thereby obviate It Will have to be understood that the invention may find expression in various other embodiments and that modifications are possible within the scope and spirit of the invention, to suit the convenience of the operator and other conditions, except as otherwise stated in the appended claim.

I claim:

A burner for gas and air under pressure, comprising a diffuser, and separate nozzles for the air and gas arranged alternately in a circle and inclined to the longitudinal axis of the diffuser, the dimensions of the diffuser and the inclined position of the nozzles being 25 such that the gas nozzles exert a suction on the air nozzles and the air nozzles exert a suction on the gas nozzles, whereby an equalization of pressure between air and gas supply is eflected. 30 In testimony whereof I atfix my signature.

ERNST MEIER. 

